Updated mediawiki/extensions
Project: mediawiki/extensions/Echo  e35e071e0b7a6cb6571f258f66686a1a702d5648

Remove namespace restriction for mention notifications

This is unlikely to cause issues since a signature is
still required.

Bug: 55491
Bug: 56311
Change-Id: Ice51ae05b581b98f1d8a90104e1707c3a590b39d